diff --git a/src/index.ts b/src/index.ts
index 82e13a0..cf81421 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -100,7 +100,7 @@ function validate(options: Options) {
         break;
       case 'qs':
         throw new Error(
-          "'qs' is not a valid configuration option. Please use 'params' instead."
+          "'qs' is not a valid configuration option. Please use 'params' instead.",
         );
       default:
         throw new Error(`'${key}' is not a valid configuration option.`);
@@ -112,14 +112,14 @@ async function metadataAccessor<T>(
   type: string,
   options?: string | Options,
   noResponseRetries?: number,
-  fastFail?: boolean
+  fastFail?: boolean,
 ): Promise<T>;
 async function metadataAccessor<T>(metadata: MetadataAccessor): Promise<T>;
 async function metadataAccessor<T>(
   type: MetadataAccessor | string,
   options: string | Options = {},
   noResponseRetries = 3,
-  fastFail = false
+  fastFail = false,
 ): Promise<T> {
   let metadataKey = '';
   let params: {} = {};
@@ -162,7 +162,7 @@ async function metadataAccessor<T>(
   // NOTE: node.js converts all incoming headers to lower case.
   if (res.headers[HEADER_NAME.toLowerCase()] !== HEADER_VALUE) {
     throw new Error(
-      `Invalid response from metadata service: incorrect ${HEADER_NAME} header.`
+      `Invalid response from metadata service: incorrect ${HEADER_NAME} header.`,
     );
   }
 
@@ -178,7 +178,7 @@ async function metadataAccessor<T>(
 }
 
 async function fastFailMetadataRequest<T>(
-  options: GaxiosOptions
+  options: GaxiosOptions,
 ): Promise<GaxiosResponse> {
   const secondaryOptions = {
     ...options,
@@ -314,7 +314,7 @@ export async function bulk<
 
         r[key] = res;
       })();
-    })
+    }),
   );
 
   return r as R;
@@ -342,8 +342,8 @@ export async function isAvailable() {
     if (!(value in METADATA_SERVER_DETECTION)) {
       throw new RangeError(
         `Unknown \`METADATA_SERVER_DETECTION\` env variable. Got \`${value}\`, but it should be \`${Object.keys(
-          METADATA_SERVER_DETECTION
-        ).join('`, `')}\`, or unset`
+          METADATA_SERVER_DETECTION,
+        ).join('`, `')}\`, or unset`,
       );
     }
 
@@ -372,7 +372,7 @@ export async function isAvailable() {
         // If the default HOST_ADDRESS has been overridden, we should not
         // make an effort to try SECONDARY_HOST_ADDRESS (as we are likely in
         // a non-GCP environment):
-        !(process.env.GCE_METADATA_IP || process.env.GCE_METADATA_HOST)
+        !(process.env.GCE_METADATA_IP || process.env.GCE_METADATA_HOST),
       );
     }
     await cachedIsAvailableResponse;
@@ -409,7 +409,7 @@ export async function isAvailable() {
         if (err.code) code = err.code;
         process.emitWarning(
           `received unexpected error = ${err.message} code = ${code}`,
-          'MetadataLookupWarning'
+          'MetadataLookupWarning',
         );
       }
 
diff --git a/system-test/system.ts b/system-test/system.ts
index 94c9abb..8144ea0 100644
--- a/system-test/system.ts
+++ b/system-test/system.ts
@@ -84,13 +84,13 @@ describe('gcp metadata', () => {
         const result = await gcbuild.build({
           sourcePath: path.join(
             __dirname,
-            '../../system-test/fixtures/cloudbuild'
+            '../../system-test/fixtures/cloudbuild',
           ),
         });
         console.log(result.log);
         assert.ok(/isAvailable: true/.test(result.log));
         assert.ok(
-          result.log.includes('"default":{"aliases":["default"],"email"')
+          result.log.includes('"default":{"aliases":["default"],"email"'),
         );
       } catch (e) {
         console.error((e as gcbuild.BuildError).log);
@@ -127,7 +127,7 @@ async function pruneFunctions(sessionOnly: boolean) {
           console.error(`There was a problem deleting function ${fn.name}.`);
           console.error(e);
         });
-      })
+      }),
   );
 }
 
@@ -158,6 +158,6 @@ async function packModule() {
     targets.map(target => {
       const to = `system-test/fixtures/${target}/${pkg.name}.tgz`;
       return copy(from, to);
-    })
+    }),
   );
 }
diff --git a/test/index.test.ts b/test/index.test.ts
index d23eeb5..abf43b6 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -179,7 +179,7 @@ describe('unit test', () => {
       .reply(200, {}, {[gcp.HEADER_NAME.toLowerCase()]: 'Hazelnut'});
     await assert.rejects(
       gcp.instance(),
-      /Invalid response from metadata service: incorrect Metadata-Flavor header./
+      /Invalid response from metadata service: incorrect Metadata-Flavor header./,
     );
     scope.done();
   });
@@ -226,7 +226,7 @@ describe('unit test', () => {
     await assert.rejects(
       // eslint-disable-next-line @typescript-eslint/no-explicit-any
       gcp.instance({qs: {one: 'two'}} as any),
-      /'qs' is not a valid configuration option. Please use 'params' instead\./
+      /'qs' is not a valid configuration option. Please use 'params' instead\./,
     );
   });
 
@@ -234,7 +234,7 @@ describe('unit test', () => {
     await assert.rejects(
       // eslint-disable-next-line @typescript-eslint/no-explicit-any
       gcp.instance({fake: 'news'} as any),
-      /'fake' is not a valid/
+      /'fake' is not a valid/,
     );
   });
 
@@ -251,7 +251,7 @@ describe('unit test', () => {
 
   async function secondaryHostRequest(
     delay: number,
-    responseType = 'success'
+    responseType = 'success',
   ): Promise<void> {
     let secondary: nock.Scope;
     if (responseType === 'success') {
@@ -467,7 +467,7 @@ describe('unit test', () => {
   });
 
   it('should fail on isAvailable if request times out', async () => {
-    secondaryHostRequest(5000);
+    void secondaryHostRequest(5000);
     const primary = nock(HOST)
       .get(`${PATH}/${TYPE}`)
       .delayConnection(3500)
@@ -482,7 +482,7 @@ describe('unit test', () => {
 
   it('should fail on isAvailable if GCE_METADATA_HOST times out', async () => {
     process.env.GCE_METADATA_HOST = '127.0.0.1:8080';
-    secondaryHostRequest(5000);
+    void secondaryHostRequest(5000);
     const primary = nock(`http://${process.env.GCE_METADATA_HOST}`)
       .get(`${PATH}/${TYPE}`)
       .delayConnection(3500)
@@ -540,7 +540,7 @@ describe('unit test', () => {
       process.on('warning', warning => {
         assert.strictEqual(
           warning.toString().includes('unexpected error'),
-          true
+          true,
         );
         return resolve();
       });
@@ -596,7 +596,7 @@ describe('unit test', () => {
   it('should only make one outbound request, if isAvailable() called in rapid succession', async () => {
     const secondary = secondaryHostRequest(500);
     const primary = nock(HOST).get(`${PATH}/${TYPE}`).reply(200, {}, HEADERS);
-    gcp.isAvailable();
+    void gcp.isAvailable();
     // because we haven't created additional mocks, we expect this to fail
     // if we were not caching the first isAvailable() call:
     const isGCE = await gcp.isAvailable();
diff --git a/test/utils/gcp-residency.ts b/test/utils/gcp-residency.ts
index 144fa78..51640f3 100644
--- a/test/utils/gcp-residency.ts
+++ b/test/utils/gcp-residency.ts
@@ -47,7 +47,7 @@ export class GCPResidencyUtil {
 
     this.stubs.osNetworkInterfaces ??= this.sandbox.stub(
       os,
-      'networkInterfaces'
+      'networkInterfaces',
     );
     this.stubs.osNetworkInterfaces.returns({
       'test-interface': [{mac} as os.NetworkInterfaceInfo],